#include <cs_lagr.h>
 Collaboration diagram for cs_lagr_time_scheme_t:
 Collaboration diagram for cs_lagr_time_scheme_t:| Data Fields | |
| int | iilagr | 
| int | isttio | 
| int | isuila | 
| int | t_order | 
| int | extended_t_scheme | 
| int | interpol_field | 
| int | ilapoi | 
| int | iadded_mass | 
| cs_real_t | added_mass_const | 
Time and coupling scheme for the Lagrangian module
| cs_real_t added_mass_const | 
Added-mass constant (  )
) 
| int extended_t_scheme | 
Extended exponential scheme taking into account the gradient of T_lag (0 off, 1 on)
| int iadded_mass | 
activation (=1) or not (=0) of the added-mass term.
![\[ \DP{u_p} = - \dfrac{1}{\rho_p} \grad P + \dfrac{u_s-u_p}{\tau_p} + g +1/2 C_A \dfrac{\rho_f}{\rho_p} \left( \dfrac{Du}{Dt}-\DP{u_p} \right) \]](form_490.png) 
and
![\[ \rho_f \dfrac{Du}{Dt} \simeq - \grad P + \rho_f g \]](form_491.png) 
 with  . Then
. Then 
![\[ \DP{u_p} = - \dfrac{1}{\rho_p} \dfrac{1+C_A/2} {1+C_A/2\dfrac{\rho_f}{\rho_p}} \grad P + \dfrac{u_s-u_p}{\widetilde{\tau}_p} + g \]](form_493.png) 
with
![\[ \widetilde{\tau_p} = (1 + C_A /2 \dfrac{\rho_f}{\rho_p}) \tau_p \]](form_494.png) 
| int iilagr | 
Lagrangian module status.
| int ilapoi | 
activation (=1) or not (=0) of the solution of a Poisson's equation for the correction of the particle instantaneous velocities (in order to obtain a null divergence). this option is not validated and reserved to the development team. Do not change the default value
| int interpol_field | 
activation (=1) or not (=0) of P1 interpolation of mean carrier velocity at the location of the particles
| int isttio | 
| int isuila | 
activation (=1) or not (=0) of a Lagrangian calculation restart. The calculation restart file read when this option is activated only contains the data related to the particles; the global calculation must also be a restart calculation
| int t_order | 
trajectory algorithm order in time